|
[Sponsors] |
Cold flow problem in Fluent-Species Transport |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
July 24, 2015, 17:26 |
Cold flow problem in Fluent-Species Transport
|
#1 |
New Member
Philip Wang
Join Date: Jul 2015
Location: New Haven, CT, US
Posts: 6
Rep Power: 10 |
Hi all,
I am trying to solve a convection/transport problem in Fluent using the Chemkin format transport database. Here's what I did: 1. Import Chemkin format mechanism (reduced 5 species, 10 steps reaction) as well as the thermo/transport file to create a new mixture (successful). 2. Enable the species transport model. The problem is below: In order to select "reaction-design" option for specific heat, thermal conductivity, viscosity and mass diffusivity, one has to enable "Volumetric Reactions" to be able to select CHEMKIN-CFD from Reaction Design. Is there a way to solve the NS using Chemkin format transport database without having any reaction (I just want to simulate mixing)? Thanks in advance! |
|
July 27, 2015, 05:17 |
|
#2 |
New Member
Xu Huang
Join Date: Apr 2015
Location: Netherlands
Posts: 23
Rep Power: 11 |
Hi,
I don't know why you want to enable "CHEMKIN-CFD from Reaction Design". This option allows you to use reaction rates from Reaction Design’s KINetics module, instead of the default ANSYS Fluent reaction rates. Since you only solve the cold flow, you can turn off the reaction and only solve the species that specified at boundary, by enabling those equations in solution controls > equations. Cheers, Xu |
|
July 27, 2015, 09:01 |
|
#3 |
New Member
Philip Wang
Join Date: Jul 2015
Location: New Haven, CT, US
Posts: 6
Rep Power: 10 |
Hi Xu,
I am introducing a simplified mechanisms for ethylene-air (5 steps 10 species) for my problem (opposed-jet). The fact that it contains only ten species emphasis the validity of both the thermal and transport properties. We have some preliminary result for a more general simplified mechanisms but we are interest in knowing whether the 5 steps mechanism is also applicable. Thanks! |
|
July 27, 2015, 09:23 |
|
#4 |
New Member
Philip Wang
Join Date: Jul 2015
Location: New Haven, CT, US
Posts: 6
Rep Power: 10 |
Xu,
I sort of understand what you are saying now. I will let you know if it works. Monday morning, you know... Thanks! |
|
July 27, 2015, 09:26 |
|
#5 |
New Member
Xu Huang
Join Date: Apr 2015
Location: Netherlands
Posts: 23
Rep Power: 11 |
Hi Philip,
If you only solve cold flow, no reactions take place, so that reaction properties are not used during the calculation. Cheers, Xu |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
The fluent stopped and errors with "Emergency: received SIGHUP signal" | yuyuxuan | FLUENT | 0 | December 3, 2013 22:56 |
Species Transport Problem | Deside | FLUENT | 3 | March 12, 2010 13:58 |
Species Transport with Multiphase flow in FBR | venkat | FLUENT | 1 | July 23, 2008 23:53 |
good Cold Flow Results but problem with Hot Flow | Rams | FLUENT | 1 | June 18, 2006 19:59 |
Laminar flow in species transport model? | Neha Rao | FLUENT | 7 | February 25, 2006 02:23 |